From 43218a1b3ba7c8e39d88b5c0a43841f0e3e17470 Mon Sep 17 00:00:00 2001 From: Jie Yang Date: Fri, 1 Aug 2014 09:06:35 +0800 Subject: [PATCH] ACPI / LPSS: add LPSS device for Wildcat Point PCH INT3438 is the ADSP device on Wildcat Point platform with 2 DW DMA engines built In. The DMA engines are used for DSP FW loading and audio data transferring. These DMA engine probing need the clock, without it, probing may failed and can't go forward. Add LPSS device "INT3438" for Wildcat Point PCH, to provide clock for its ADSP DMA engine probing. Signed-off-by: Jie Yang Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_lpss.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 9cb65b0e7597..ce06149088c5 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -113,6 +113,14 @@ static void lpss_i2c_setup(struct lpss_private_data *pdata) writel(val, pdata->mmio_base + offset); } +static struct lpss_device_desc wpt_dev_desc = { + .clk_required = true, + .prv_offset = 0x800, + .ltr_required = true, + .clk_divider = true, + .clk_gate = true, +}; + static struct lpss_device_desc lpt_dev_desc = { .clk_required = true, .prv_offset = 0x800, @@ -226,6 +234,8 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { { "INT3436", LPSS_ADDR(lpt_sdio_dev_desc) }, { "INT3437", }, + { "INT3438", LPSS_ADDR(wpt_dev_desc) }, + { } }; -- 2.39.5